SmartSolar charge controller MPPT 150/35
1. General Description
1.1 Charge current up to 35A and PV voltage up to 150V
The SmartSolar MPPT 150/35 charge controller is able to charge
a lower nominal-voltage battery from a higher nominal voltage PV
The controller will automatically adjust to a 12V, 24V or a 48V
nominal battery voltage.
1.2 Ultra-fast Maximum Power Point Tracking (MPPT)
Especially in case of a clouded sky, when light intensity is
changing continuously, an ultra fast MPPT controller will improve
energy harvest by up to 30% compared to PWM charge
controllers and by up to 10% compared to slower MPPT
1.3 Advanced Maximum Power Point Detection in case of
partial shading conditions
If partial shading occurs, two or more maximum power points may
be present on the power-voltage curve.
Conventional MPPTs tend to lock to a local MPP, which may not
be the optimum MPP.
The innovative SmartSolar algorithm will always maximize energy
harvest by locking to the optimum MPP.
1.4 Outstanding conversion efficiency
No cooling fan. Maximum efficiency exceeds 98%. Full output
current up to 40°C (104°F).
1.5 Extensive electronic protection
Over-temperature protection and power derating when
temperature is high.
PV short circuit and PV reverse polarity protection.
PV reverse current protection.
1.6 Internal temperature sensor
Compensates absorption and float charge voltages for
temperature. (range 6°C to 40°C)
1.7 Optional external voltage and temperature sensor
(range -20°C to 50°C)
The Smart Battery Sense is a wireless battery voltage-and-
temperature sensor for Victron MPPT Solar Chargers. The Solar
Charger uses these measurements to optimize its charge
parameters. The accuracy of the data it transmits will improve
battery charging efficiency, and prolong battery life.
Alternatively, Bluetooth communication can be set up between a
BMV-712 battery monitor with battery temperature sensor and the
solar charge controller.
For more detail please enter smart networking in the search box
on our website.
1.8 Automatic battery voltage recognition
The MPPT 150/35 will automatically adjust itself to a 12V, 24V or
a 48V system one time only. If a different system voltage is
required at a later stage, it must be changed manually, for
example with the Bluetooth app, see section 1.11.
1.9 Flexible charge algorithm
Fully programmable charge algorithm, and eight preprogrammed
algorithms, selectable with a rotary switch.
1.10 Adaptive three step charging
The BlueSolar MPPT Charge Controller is configured for a three
step charging process: Bulk – Absorption – Float.
During this stage the controller delivers as much charge current
as possible to rapidly recharge the batteries.
When the battery voltage reaches the absorption voltage setting,
the controller switches to constant voltage mode.
When only shallow discharges occur the absorption time is kept
short in order to prevent overcharging of the battery. After a deep
discharge the absorption time is automatically increased to make
sure that the battery is completely recharged. Additionally, the
absorption period is also ended when the charge current
decreases to less than 2A.
During this stage, float voltage is applied to the battery to
maintain it in a fully charged state.
See section 3.8
1.11 Remote on-off
The MPPT 150/35 can be controlled remotely by a VE.Direct non
inverting remote on-off cable (ASS030550300). An input HIGH
(Vi > 8V) will switch the controller on, and an input LOW (V < 2V,
or free floating) will switch the controller off.
Application example: on/off control by a VE.Bus BMS when
charging Li-ion batteries.
1.12 Configuring and monitoring
Configure the solar charge controller with the VictronConnect
app. Available for iOS & Android devices; as well as macOS and
Windows computers. An accessory might be required; enter
victronconnect in the search box on our website and see the
VictronConnect download page for details.
For simple monitoring, use the MPPT Control; a panel mounted
simple yet effective display that shows all operational parameters.
Full system monitoring including logging to our online portal,
VRM, is done using the GX Product range
2. IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS - This manual contains
important instructions that shall be followed during
installation and maintenance.
● Please read this manual carefully before the product is
installed and put into use.
● This product is designed and tested in accordance with
international standards. The equipment should be used for
the designated application only.
● Install the product in a heatproof environment. Ensure
therefore that there are no chemicals, plastic parts, curtains or
other textiles, etc. in the immediate vicinity of the equipment.
● The product is not allowed to be mounted in a user accessible
● Ensure that the equipment is used under the correct operating
conditions. Never operate it in a wet environment.
● Never use the product at sites where gas or dust explosions
● Ensure that there is always sufficient free space around the
product for ventilation.
● Refer to the specifications provided by the manufacturer of the
battery to ensure that the battery is suitable for use with this
product. The battery manufacturer's safety instructions should
always be observed.
● Protect the solar modules from direct light during
installation, e.g. cover them.
● Never touch uninsulated cable ends.
● Use only insulated tools.
● Connections must always be made in the sequence described
in section 3.6.
● The installer of the product must provide a means for cable
strain relief to prevent the transmission of stress to the
● In addition to this manual, the system operation or service
manual must include a battery maintance manual applicable to
the type of batteries used.
Danger of explosion from sparking
Danger of electric shock
WARNING: DC (PV) INPUT NOT ISOLATED FROM BATTERY
CAUTION: FOR PROPER TEMPERATURE COMPENSATION
THE AMBIENT CONDITION FOR CHARGER AND BATTERY
MUST BE WITHIN 5°C.
● Mount vertically on a non-flammable substrate, with the power
terminals facing downwards. Observe a minimum clearance of 10 cm
under and above the product for optimal cooling.
● Mount close to the battery, but never directly above the battery (in
order to prevent damage due to gassing of the battery).
● Improper internal temperature compensation (e.g. ambient condition
battery and charger not within 5°C) can lead to reduced battery
We recommend using a direct battery voltage sense source (BMV,
Smart Battery Sense or GX device shared voltage sense) if larger
temperature differences or extreme ambient temperature
conditions are expected.
● Battery installation must be done in accordance with the storage
battery rules of the Canadian Electrical Code, Part I.
● The battery and PV connections must be guarded against
inadvertent contact (e.g. install in an enclosure or install the optional
● Battery grounding: the charger can be installed in a positive or
negative grounded system.
Note: apply a single ground connection (preferably close to the battery)
to prevent malfunctioning of the system.
● Chassis grounding: A separate earth path for the chassis ground is
permitted because it is isolated from the positive and negative
● The USA National Electrical Code (NEC) requires the use of an
external ground fault protection device (GFPD). These MPPT chargers
do not have internal ground fault protection. The system electrical
negative should be bonded through a GFPD to earth ground at one
(and only one) location.
● The charger must not be connected with grounded PV arrays. (one
ground connection only)
● The plus and minus of the PV array should not be grounded. Ground
the frame of the PV panels to reduce the impact of lightning.
WARNING: WHEN A GROUND FAULT IS INDICATED,
BATTERY TERMINALS AND CONNECTED CIRCUITS MAY BE
UNGROUNDED AND HAZARDOUS.
3.3. PV configuration (also see the MPPT Excel sheet on our
● Provide a means to disconnect all current-carrying conductors
of a photovoltaic power source from all other conductors in a
building or other structure.
● A switch, circuit breaker, or other device, either ac or dc, shall
not be installed in a grounded conductor if operation of that
switch, circuit breaker, or other device leaves the grounded
conductor in an ungrounded state while the system remains
● The controller will operate only if the PV voltage exceeds
battery voltage (Vbat).
● PV volta